<!DOCTYPE html>
<!-- 
  xhtml -> 严格的 html
 -->
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  

  <svg
    version="1.0"
    baseProfile="full"
    width="100"
    height="100"
    xmlns="http://www.w3.org/2000/svg"
  >
    <rect x="0" y="0" width="100" height="100"></rect>
    <title>我是svg title</title>
  </svg>


</body>
</html>